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2nd Gen Ram Tech 1994-2001 Rams: This section is for TECHNICAL discussions only, that involve the 1994 through 2001 Rams. For any non-tech discussions, please direct your attention to the "General discussion/NON-tech" sub sections.

Heater does not get hot

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Old 01-17-2009, 02:30 PM
jr7089 jr7089 is offline
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Default Heater does not get hot

98 Ram 1500 V6, the heater only gets luke warm at best it never gets hot enough to turn it down. Any suggestions where to start looking?

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Old 01-17-2009, 05:26 PM
Fivspeed Fivspeed is offline
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Join Date: Dec 2006
Posts: 9

I'll give you some general info not specific to the Ram. Start by checking the coolant level. If thats good, check the thermostat. You could do that by starting your truck while the engine is cold and touching the upper (I think) radiator hose. It should stay cold until your engine reaches operating temp and then the hose should rapidly get hot. That signifies that your thermostat has opened. It still could be your thermostat since it opens and closes based on the temperature of the coolant and may be getting stuck wide open. To be honest, if you haven't changed it in years, go ahead and change it. If the coolant is fine, and the thermostat is good, I'd check for a blockage in the heater core.
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Old 01-17-2009, 07:15 PM
blueram1500 blueram1500 is offline
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Join Date: Jan 2009
Vehicle: Dodge Ram 1500
Location: Long Island
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I had the same problem it ended up being my radiator was clogged only the top would get hot and the bottom was ice cold feel your bottom hose on the radiator. So I replaced the thermostat and radiator and now the heat blows nice and hot.
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Old 01-17-2009, 07:20 PM
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Gary-L Gary-L is offline
Join Date: May 2005
Vehicle: 2007 Ram 1500 4x2 Big Horn aka The Silver Bullet
Location: Norman, Okla-mobile-homa
Posts: 8,054

Make sure your windows are rolled up
You can have my Oxford comma when you pry it from my cold, dead, and lifeless hands.
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Old 01-18-2009, 12:17 AM
iwhitne iwhitne is offline
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Vehicle: 2008 1500 4x4! stock for now!
Location: The Buckeye State... OHIO
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you can also put some cardboard infront of the radiator just leave a little room for some air and take it off when the weather is warm
1998 Dodge ram 1500-SOLD
1999 Dodge Ram 2500 Cummins- SOLD
2008 Dodge ram 1500- Big Horn >>> MODS TO COME <<<
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Old 01-18-2009, 12:44 AM
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dodgeram07 dodgeram07 is offline
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Vehicle: 1995 ram 1500 5.2 2wd slt ext cab
Location: ohio
Posts: 3,363

check rad cap... you also can try it to autozone and they will test it for FREE!!!!
that will get you started
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Old 01-18-2009, 12:44 AM

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